We find some useful and effective approximations of the dispersion relation of the fundamental surface plasmon wave propagating around a curved dielectric-metal interface. These estimations are valid even with a very small curvature radius, which is the case of interest for nano-optics applications, and are validated through the numerical solution of the characteristic equation of the curved interface.
© 2011 Optical Society of America
Optics at Surfaces
Original Manuscript: November 1, 2010
Revised Manuscript: March 25, 2011
Manuscript Accepted: April 4, 2011
Published: May 18, 2011
Massimiliano Guasoni, "Analytical approximations of the dispersion relation of the plasmonic modes propagating around a curved dielectric-metal interface," J. Opt. Soc. Am. B 28, 1396-1403 (2011)